Vision testing of infants in a child health clinic and at home.
D002648:Child; D002657:Child Development; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D008403:Mass Screening; D008404:Massachusetts; D008499:Medical Records; D009759:Nystagmus, Pathologic; D012018:Reflex; D014786:Vision Disorders / Q000175:diagnosis*; D014787:Vision Tests / Q000295:instrumentation